Roller Door Drive Control via Dynamic Position Monitoring
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Solution Overview
Problem
Existing roller shutter safety devices fail to detect imminent accident situations, such as narrow forklifts or high wind loads, which can cause damage to the door curtain or lead to accidents, due to limitations in sensor placement and detection capabilities.
Innovation Solution
A method and device that continuously determine the spatial position and vibration of the door leaf relative to defined virtual reference planes, using measuring devices integrated into the door leaf, to generate signals for controlling the drive and prevent accidents by stopping or reversing the door movement when limit values are exceeded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sensors are arranged at fixed locations to detect end positions, then the control system is simple, but it cannot detect imminent accident situations such as narrow forklifts or high wind loads
Solution Approach 1:
The patent applies the dynamics principle by transitioning from static sensor arrangements to dynamic measurement of the door curtain's actual position and movement characteristics. The system continuously monitors position deviations and movement patterns, allowing the safety detection capability to adapt to various accident scenarios dynamically rather than relying on fixed sensor locations.
Solution Approach 2:
The patent replaces traditional mechanical sensor arrangements with a measurement system that evaluates position and movement characteristics of the door curtain. Instead of relying on fixed mechanical sensors, the system uses measurement devices to continuously monitor the door's behavior, substituting a more flexible measurement-based approach for rigid mechanical sensing.
2Reliability
If the door curtain is guided in fixed guide slots, then the guidance is simple, but it cannot detect wind-induced vibrations or position deviations
Solution Approach 1:
The patent implements feedback by continuously measuring the actual position of the door curtain relative to its expected path and using this information to evaluate safety. The system monitors position deviations and movement characteristics in real-time, providing feedback that triggers safety responses when anomalies are detected, such as wind-induced vibrations or obstruction.
Solution Approach 2:
The patent applies preliminary action by continuously monitoring the door curtain's position and movement before actual damage or accidents occur. The system detects anomalies such as increased vibrations or position deviations that indicate impending problems, allowing preventive safety responses to be activated before serious incidents happen.
3Reliability
If the drive is switched off at end positions based on pulse counting, then the control is simple, but it cannot prevent damage from collisions or high wind loads
Solution Approach 1:
The patent replaces simple pulse-based drive control with a measurement-based system that monitors the door curtain's actual movement and position. Instead of relying solely on pulse counting to determine end positions, the system uses measurement devices to evaluate the door's behavior in real-time, enabling more sophisticated safety control that can respond to collisions and high wind loads.
Solution Approach 2:
The patent implements feedback control by continuously monitoring the door curtain's position and movement characteristics and using this information to control the drive. The system adjusts drive operation based on real-time measurements, allowing it to prevent damage by stopping or reversing the drive when anomalies such as collisions or high wind loads are detected.
Data Source
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AI summary
The method involves providing a gate page (15) at a boundary region in a guide slot of a guide unit of a roll gate (1) during opening or closing of the roll gate. The roll gate is closed in final position. Spatial position of a paragraph of the gate page is determined. Measured Value of a reference channel from a measuring instrument (25) is transmitted to a defined virtual reference layer. Switching signals are transmitted to a control unit (12) of the roll gate to control a drive (11) of the roll gate based on analysis of derivation of the signals. An independent claim is also included for a device for controlling a drive of a roll gate.